Update Pager.swift

fixing fermoya#329

Sources/SwiftUIPager/Pager.swift

@@ -111,6 +111,9 @@ public struct Pager<Element, ID, PageView>: View where PageView: View, Element:
  /// `true` if `Pager` can be dragged
  var allowsDragging: Bool = true
 
+ /// `true` if `Pager` can be controlled by the keyboard commands
+ var allowsKeyboardControl: Bool = true
+
  /// `true` if `Pager`interacts with the digital crown
  var allowsDigitalCrownRotation: Bool = true
 
@@ -215,7 +218,8 @@ public struct Pager<Element, ID, PageView>: View where PageView: View, Element:
  .padding(sideInsets)
  .pagingAnimation(pagingAnimation)
  .partialPagination(pageRatio)
-
+ .allowsKeyboardControl(allowsKeyboardControl)
+
  #if !os(tvOS)
  pagerContent = pagerContent
  .swipeInteractionArea(swipeInteractionArea)
@@ -245,7 +249,7 @@ public struct Pager<Element, ID, PageView>: View where PageView: View, Element:
  pagerContent = isHorizontal ? pagerContent.horizontal(horizontalSwipeDirection) : pagerContent.vertical(verticalSwipeDirection)
 
  if let preferredItemSize = preferredItemSize {
- pagerContent = pagerContent.preferredItemSize(preferredItemSize, alignment: itemAlignment)
+ pagerContent = pagerContent.preferredItemSize(preferredItemSize)
  }
 
  return pagerContent